How to start your car in cold weather

Updated on October 28, 2025

3 mins reading time

In Quebec’s extreme cold, starting your car can be a real challenge. A dead car battery, a stubborn engine, or even the need for towing—all are common winter problems. Check out our practical winter driving tips to prevent car breakdowns and learn how to start your vehicle in winter, even when it’s -30°C.

Limit your start attempts when the engine is frozen

Your car won’t start in cold weather? First, consult your vehicle’s manual for the specific cold-weather starting procedure. Each attempt to start your car should last no more than eight to ten seconds. Didn’t work? Wait about 30 seconds, then try again while pressing the accelerator fully.

This method helps optimize the air-fuel mixture needed for ignition without flooding your engine. After three or four failed attempts, contact Roadside Assistance or a towing service.

Use a block heater to make winter starts easier

A block heater warms up your vehicle’s engine and helps maintain the right temperature for key components. This makes starting your car much easier in cold weather. Plugging it in for about three hours is usually enough.

How much does a block heater cost?

A block heater typically costs between $50 and $200, while installation — often negotiable when buying a vehicle — can range from $100 to $350. It’s a smart investment to discuss with your car dealer.

Expert’s insight

“Using a block heater in winter helps your car start more easily, reduces mechanical friction, and lowers fuel consumption. It’s a small habit that benefits both your engine and your wallet.”

Sylvain LégaréResearch Analyst, Mobility, CAA-Quebec

Driving an electric vehicle? Schedule cabin preheating while your car is plugged in. This helps preserve battery range and ensures you drive safely with defrosted windows.

Choose synthetic oil to protect your engine in cold weather

Outside view of a driver attempting to start her car in winter

While synthetic motor oil costs more than conventional oil, it provides better engine protection and makes cold starts easier. It also keeps its properties longer, unlike mineral oil, which can thicken like molasses in freezing temperatures.

Tip: During your winter tire change, consider getting an oil change as part of your winter car care routine.

Check your car battery before winter arrives

At temperatures like -30°C, a car battery only retains about 25% of its starting power. Modern vehicles place high demand on their batteries, which often last around four years. To avoid winter surprises or a tow truck call, follow these car battery maintenance tips:

Test your car battery condition before winter.

Disconnect the battery and clean the terminals at the first signs of corrosion. Regular battery maintenance is essential.

If it needs replacing, choose a high-quality car battery that is well suited to your vehicle’s needs. If you’re a CAA-Quebec member, you can request Battery Service to have your battery tested or replaced at home or work.

Learn more about the different types of car batteries and read our tips to extend your battery life.

Keep your gas tank full and charge your EV in cold weather

Never drive with an almost empty gas tank in winter, especially during freezing weather. A low fuel level increases the risk of condensation and ice buildup in the fuel lines, which can damage the fuel pump.

Driving an electric car? Always fully charge your battery before hitting the road. Allow extra electric vehicle charging time during cold spells to maintain optimal battery range and driving efficiency.

Every car is unique! Always consult your owner’s manual for model-specific recommendations.

Prepare your car for winter

Proper winter car maintenance can make all the difference in preventing breakdowns and ensuring smooth cold starts. For more information, check out our comprehensive guide on winter driving.